#427BD4#427BD4

#427BD4 is a mid, vivid blue. Relative luminance 0.201; OKLCH L 58.9% C 0.149 H 259.0°. Best body text is #000000 at 5.02:1 contrast (WCAG AA passes).

Color values

HEX	#427BD4
RGB	rgb(66, 123, 212)
HSL	hsl(217, 63%, 55%)
HSV	hsv(217, 69%, 83%)
CMYK	cmyk(68.9%, 42%, 0%, 16.9%)
CIE-LAB	lab(51.92, 10.50, -51.32)
CIE-LCH	lch(51.92, 52.39, 281.57°)
OKLab	oklab(58.86% -0.0284 -0.1466)
OKLCH	oklch(58.86% 0.149 259)
XYZ	xyz(21.2091, 20.0754, 65.0318)
Luminance	0.2008 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#427BD4 #D49B42

analogous

#42C4D4 #427BD4 #5242D4

triadic

#427BD4 #D4427B #7BD442

tetradic

#427BD4 #D442C4 #D49B42 #42D452

square

#427BD4 #D442C4 #D49B42 #42D452

split-complementary

#427BD4 #D45242 #C4D442

monochromatic

#1D437F #285DB1 #427BD4 #749EDF #A6C1EB

Accessibility & contrast

On white

4.19

#427BD4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.02

#427BD4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #427BD4

5.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##427BD4	#FFFFFF	#000000	##000000
##427BD4	1.00	4.19	5.02	5.02
#FFFFFF	4.19	1.00	21.00	21.00
#000000	5.02	21.00	1.00	1.00
##000000	5.02	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5183D7

Deuteranopia (green-blind)

#3976D2

Tritanopia (blue-blind)

#00909D

Achromatopsia (no color)

#7C7C7C

Design tokens & code

CSS

--color: #427bd4;
/* rgb */ color: rgb(66, 123, 212);
/* oklch */ color: oklch(58.9% 0.149 259.0);

Tailwind

colors: {
  custom: {
    50: '#86a0e2',
    500: '#427bd4',
    950: '#000000',
  },
}

SCSS

$custom: #427bd4;
$custom-light: #86a0e2;
$custom-dark: #000000;

JSON

{
  "hex": "#427bd4",
  "rgb": {
    "r": 66,
    "g": 123,
    "b": 212
  },
  "hsl": {
    "h": 216.575,
    "s": 62.931,
    "l": 54.51
  },
  "oklch": {
    "l": 0.58864,
    "c": 0.14927,
    "h": 259
  },
  "luminance": 0.20078
}

Semantic roles & 50–950 ramp

primary

#427BD4

secondary

#D8C09A

accent

#A642E6

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #427BD4

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →